Carbureter.



W. A. GAHLL.

CARBURETBR. l APPLIUATION FILED AUG. 121; 1908. l1,078,41 3. Patented Nov. 11, 1913.

WR A, GAHILL.

GARBURBTER.

APPLwAAToN 111131311111112, 1908.

` Patented Nov. 11, 1913.

2 SHEETS-SHEET 2.

l jointly.

5a valve-seat to prevent clogging.

The lower end of the tube 1lis provided with a daring mouth indicated at -l3-. Said mouth is disposed a short distance above the -lolwer edges of the ports -7- and it is tte to the interior of the tubular valve -S- sutliciently tight to prevent the air from passing between said tube -lland valve when the latter is lifted to a small degree, whereby the air is drawn through the tube or main passage -ll-.

Above the niain'air-passage is arranged a very small transverse tube 14- constituting a nozzle through which the gasolene or other liquid is fed to the passages This tube --leld is suitably secured at oneend in an inlet-openiiig dla-- in the casing and communicating with a cylindrical;l,i ,-ri\-dclianiber -lG- secured to or form'ed A/iiifgral with the casing asf 29 clearly shown in Fig. 2, the other end oft said tube being disposed directly over the central tube 1l- The lower end of the chamber 1G- is provided with an opening -lxthrough which the liquid enters and above the ope/iing is disposed an automatically closing v rtically movable valve 17- which is opened by the air-inlet valve -S- whereby the quantities of air and liquid will always be of the same relative proportions as will be hereinafter more fully explained.

The liquid-valve -17- is preferably of conical shape and is provided with a correspondingly shaped seat -l8 formed in the chamber, and to the valve is attached a stem -l9-- passing through a removable cap -QO on the upper end of the chamber, and between said cap and valve and surrounding the stein is a spiral spring -21- which kg-forces the valve to its seat when the valve is thrown out of connection with its operating mechanism as will be hereinafter more fully explained. l prefer to provide this conical valve --174 with a series of circum-t frustuni-sliapcd rings in order to reduce its 'bearing surface and insure a more even wear on said surface and at the saine time provide scraping' edges for cleanipg the Any suitable mechanism may be employed for connecting the ,liquid-inlet valve -l7d with the aforesaid air-inlet valve -S- whereby the two valves are opened and closed simultaneously incident to the increase anddecrease in suction of the engine.y The preferred mechanism comprises a pair of parallel elongated plates -22- disposed above and at opposite sides of the gasolenechamber '-lGw and which are designed to lie in substantially horizontal position when the valve -l-T- is closed and are rigidly connected at their outer ends by a transverse bar -23 The inner end portions of said plates are provided with tubular Lovsfiis hubs 2liconstituting bearings in which is mounted si shaft -25- having its ends protruding from the plates.

The valve-stem 19- is provided at its upper end with a suitable box or bearing -Qxthrough which the shaft Q5- passes and which is composed of two separable parts to allow the shaft and Stem to be readily detached if required. The opening of said box is elongated transversely in relation to the shaft to produce a loose connection between said shaft and stem to allow the plates -22- to be swung vertically to raise and lower the stein as will be hereinafter referred to.

-2G denotes a pair of parallel arms which are arranged at opposite sides of the casing -2-- and chamber #16- correspondingly with the plates Q2- The said arms are rigidly connected at one end to the respective ends of the shaft -25 and the free end portions of said arms pass slidingly through pivotal bearings Q7- supported by means of screws or pins Q8- in bifurcations -29- formed at the upper ends of vertically arranged rods M30- which are rigidly connected at their lower ends to opposite sides of the aforesaid tubular air-valve -8-. rihese rods nieve in suitable guides 3lprovided on the eX- terior of the casing Q and may be attached to the valve -8- in any convenient manner. One means of attachment is shown in Fig. l0 of the drawings.

fit' opposite sides of the casing -2 are arranged parallel horizontal rods 32- passing under the aforesaid shaft -25- and disposed at right angles thereto. These rods are supported longitudinally movable in suitable guides 33-- secured to the casing and each has the end portion adjacent -to the shaft provided with an upwardly proj ectiiig arm 3i-3 and said rods extend I along the outer sides of the respective plates 4 5 fereiitial grooves to produce a succession of connected to the arm by means of a pin 36- whereby the said link is adapted to be shifted toward and fronnthe shaft Q5- Said jlinlrs are formed with circular seats 37- adapting theifn to partly embrace the respective tubular shaft-bearings or hubs 24- on. the plates when the links are shifted to their innermost positions, for the purpose shortly. explained. rEhese links are preferably C-shapedand each is'provided4 at its ends with pins 3S- adapted to slide. respectively in a pair of parallel longitudi-- nal slots --39- provided in the adjacent plate --22-. y rhe inner end portion of the upper slot of each plate lis curved downwardly afdjacent to and concentrically with the afore said tubular shaft-bearings 2eas indicated at -33x-., and each lower slot is prov Lorente vided, in Iits top edgevvith a recess -39. These our ved portions oit the upper slots and recesses of the lower slots accommodate the pins -38- when the linlts en'ibrace the said g', bearings incident to the lifting or' the plates,

the said links being moved to this position to allow the valve m19 to close to cut oli the feed of liquid when the air-valve -8-` is open for the purpose hereinafter more fully explained.

l prefer to provide the pins 3S-38 ol the links with rollersl 40 to reduce the friction in the slots of the plates as clearly illustrated in Fig. 9.

The aforesaid rods --3Q are rigidly connected by a transverse bar Hdlpassing through a longitudinal slot l-2M provided in a depending lever W13- pivotally connected 'to a bracket ildsuitably fastened e to the casing Q-, to the lower end o1 which. lever is connected a rod 45m which actuates the same 'for adjusting the aforee said links in relation to the shatt -25.

lt is obvious that the means for actuating the lever 4;3* may include a handelever or other suitable device under control ot' the operator, and this manitally-operate(i device may be provided with a dial or indi- 80 cater to enable the person in charge to delo 'been found in practice that the best results are obtained by employing tvvo of such screens, the lower one being llat and seated with its marginal portionupon a shoulder dT-- provided on the interior of the casing' -2- and the upper screen formed coneshaped and seated upon a spacing-ring which clamps the lower screen to the said shoulder. The marginal portion ot said upper screen is clamped between the d rind` and aforesaid coupling -G as shown in Fig. 2.

To the top oli the lower screen is secured a small centrally arranged cone-shaped cap -lll-- also composed of tine wire-netting. ll`he top ot the other screen is also provided u ith a central cap --:'}O- which preferably has its marginal portion flared. lly this construction and arrangement of the screens in the passage leading directly to the in- 3 mlm-pipe Ml--, it is evident that draft oit' air and liquid through said screens will cause them to be intimately mixed and delirered to the engine-cylinder in a thoroughly vaporized condition.

5 The carburetor is connected by means et a pipe v431- 'to the usual storing-tank indicated at m52 and supported in any convenient manner and elevated some dist-ance above the chamber so as to provide considerable' force of the liquid and thereby obtain a more eliect-ual feed of the liquid to the chamber.

1 ln' the liquid-passage between the storingtank f-52 and chamber lis provided a filter which insures the production ot an absolutelyr pure mixture, and at the same time the lialflility of the valve -l7- becoming clogged is e'liiectually prevented. This .filter comprises preferably a v 'cally disposed chamber 53M which is suitably connected at one side, n ar the centr-,r ot its length, to the pipe -51-#. The upper end of the chamber 5? is seredln-ended externally wlnn'ehy itis scoured in a suitable correspondiugly threaded coupling' ---."ihl--, which latter is connected to the lovscr end of the chamber b-l(5- by serew-threading the parts.

At the inlet of the filter-tliairiber is provided an upturned spout S5- and adiacentI to the spout is disposed a dcilcctor ?GW consisliugr,r of a vertically arranged elongated plaie formed circular in cross-sootion and placed at one side nl the center o'l the chamber. This detlector may be soldered or otherwise fastened in the chamber.

Above the deliector is provided a screen -57- arranged inv inclined position and composed of wire-cloth ot' very line. mesh. The margin ot this wirecloth is secured between two suitably united rings 5S-- tastened Within a tube M59- supported-removably within the chamber -5?, and preferably seated in recesses Gli provided in the upper portion ot the define-tor --56- at its junction with the chamber.

The lower end of the chamber --lis provided with an opening lilu and formed thereat with a screw-ihreadcd nipple (52- to which is applied a removable cap -A33- lt obvious that when the gasolenc or other liquid is drawn'into the chamber 51%-, the def'lector 5(3- will direct the liquid against the inclined screen -5- whereby any dirt or other substance that may be contained in the linlid will be pre` vented from entering the chamber 1G- and thus become deposited in the bottom of the chamber 53 from which it can ne readily removed by takingofl the cap G3- ll`he Said screen can be easily removed tor the purpose of cleaning the same by disconnecting the chamber m53- so as to permit the withdrawal of the tube -5l)- in which the said screen is supported.

To prevent the aforesaid airwalve -S- trom tluttering'during its change olf position. incident to the increase or decrease o't suction7 l provide a cushioning device consisting preteral'ily ot' an air dash-pot comw prising a small cylindricalair-chamber -64lrigidly fastened to and deperuling centrally from a cap or plug1 secured removably in the lower end ot the casing Q, the lower end of which air-chamber is closed and provided with a pin-hole G6- for the entrance and escape of the air, and in said chamber is arranged a piston -67- which is connected by a rod --68- to a cap or plug -69- suitably secured in the lower end of; the tubular air-valve -S-. Said piston-rod passes through a disk 70- which closes the upper end ofthe chamber 6d- It is evident that when the valve --S- is lifted the piston -67- ivill dran' air into the chamber. G4-M, and the air will be confined in saidchamber owing,f tothe extremely small opening -66-, and thus the gravitating valve, Whenrelieved to a greater or less degree from the suction action of the enginepiston, Will eilectually cushioned and allowed to descend Without jar, and fluttering is prevented during upward movement, and furthermore under uniform suction-strokes is maintained stationary.

The cap or plug -65- is provided with ports 7lfor the escape of air which might otherwise be entrapped in the casing between said plug and lower end of the valve ---8--` and o er resistance to the valve when the latter tends to close.

To prevent dust from being drawn into the air-ports -7- I provide a screen T2- consisting of a cage-like structure and coinposed mainly of line Wire-cloth, and housing the casing 2 for a portion of its length' and supported thereon in any convenient manner. This screen is clearly illustrated in Fig. 2 of the drawings and is indicated by dotted-lines'in Fig. l.

Having described the construction of my carbureter, I will now proceed to explain its operation in order that. the same may be more fully understood. Before starting the engine, the links -35- are sot at a predetermined distance from the shaft Q5-diy the operation of the lever and resultant shifting of the rods 3Q- whereby the pivots of the rigidly connected slotted plates are adjusted correspondingly to regulate the movement of said plates so as to cause the valve -17- to be opened to the desired degree by the air-valve -8- as Will be shortly more speciicall Y pointed out. lt is obvious that by the described connection of the links with the shifting-rods and slotted plates, and the connection of the plates with the vertically movable valve-stein W19, the said plates are retained in their adjusted positions. When the engine has started, the suction created in the intake-pipe and casing lifts' the tubular air-valve 8;- to open the ports -7-.

By opening the ports --7-l to a small tube or nia 1 closed by the contact et the mou --13- with the tubular air-valve.v Bv ti;

te he and nos-sl nozzle in relation to the air-nassage illand. the provision of the herein' eiiore described cause air nel liquid to be intimately mined so as to supply the mixture to toe engine-cylinder in thoroughly vaporized condi i is suction becomes stronger the valve is ceused V to be lifted to a greater extent to increase the area of the inlet-ports -7- at t` same said valve, through the desclibe mechanism, opens the valve --l9- to .41, greater degree to permit Van increased quam i tity of liquid to be drawn into the eirpessage. The continued lifting or the vif J -8- carries its lower end above the mouth i3-- of the 'tube -ll 'whereby a larger quantity of air is drawn through the auxiliary passage --3--. This increase -in the supply ot air and liquid obviously' produces greater engine-speed. lt will be understood however, that this suction action a is to he Controlled oy means of suitable i" tlirottling device (not necessary to shown) applied to the intake-pipe --lin. the usual and vvell known mennen lt is evident by simultaneously actuating the air-inlet valve and liquid-inlet valve, the saine relative proportions of air and liquid will be maintained in the mixture regardless or the quantities taken in.

Wvhen the operator closes down the 35 throttle-valve, the suction in the intuire-pipe will obviously be decreased, whereby the valve m8- will by Gravitation move den and thereby reduce the area of the air-inlet ports 7 described n ections between the said and v' i valve -i9- will cause the latter to be moved simultaneously and correspo n nglyto reduce the oL liquid, thus decreasing the supply of inizftore to the enginen By this simultaneous and automatic action of the tivo valves the air and liquid in the mixture are always o the saine relative proportions lt it is found that the proportion of liquid should be increased or decreased. to meet l links 35miiiwiirdly in changes in Weather eondilions or for ollierY reasons, the operator Cim readily adjust die aforesaid links 3S-- to ai grenier or lees ditzince from the shaft lio corre spondingly increase ind decrease the leverage of the vertically swinging pluies -r2i-. and thus regulate the :lotion of lhe fzfilve -.l9--. This regulation of the 'velveezierien .is effected by operatingv the lever hereinhefore referred to. Conditions, the linli's 35- when once sel, in Such poeition as ro obtain proper resulte, are not required lo be lfliel'urliied, except', in @ilse il is desired lao :illow the valve lil-- to lcoinpletely eloee lio our off leed of liquid lo the eir-i'mssa'ge :is will ne shortly' explained. This position olf said. linke er.

lie readily determined hy the use ol e dial or indicator (not shown) Connected to or :ivliuiled hy e suiluble lliindderir or other :i ,La

derive xy rrzn'iged lio he conveniently operai, hy lhe peron in elisir-gre.

li' it is deeired to enlirely col, ofi' the leu. o'l liquid while The engine if rnnningr, the operatornioreethe initrd-lever? olher de vice referred to for llirowing iihe lever flflf outward :is indicated hy dolled lines in Fig. S ol' lhe drziwingle. Thil-s inovenienl` olf the lever and oorresi'ionling shifting i'iiovenionl' ol. the rods mirri the relzilion lo (fusing, whereby Seid linls :irofnused lo enilirzire i'lie :iloresnid tubular hulle or henriiilg'efw-Z-l of the shul --A--li-w. The linli'e :ire perinitled to assume this poeiliion hy reeeon of the upper slots oi l'he pluies --Q2- being Curved ronoenlrieallyv willi llie ssi id tubular hearings und lhe lowel. slots; heing;4 provided with recesses as liereinlie'ore (lesrfriied. liy thus; positioning the links when the engine is running? he folernins of the platee are ti'nnslierred from the link-- pivos --Bllto the Shelli 2o-e wlierel'iy the links are thrown ont oi opeeliire oo nneetion with the slotted pluies to allow the latter to drop to close the valve fil-w. This :lotion of lhe valve is insured hy the spiral-spring --ll-i enrronnding;`- the vulveetein and disposed lielween valve and top oil the chiunloer -l3-.

The complete cutting olf of the liquid while lhe engine is running in deeiriilile in instance where l'he engine is mounted on e vehicle. vllor example7 when the vehicle ie deseending),r fr ,tirado or traveling under uionientinn follmving" the cutting; out ol the ignition menne, hy allowing lelie liquid-vnlro lo close ns Slalod, the pieton ie caused i'o driiw the :iir inlo llie ryliinler und llingy el Ferliifilly cool (he engine.

lt will lio ui'ulerslood thai; eduring the r-ool in;l Vaflion of the oziiliuroler, llie lhiollliogg'f devine muy he liilly opened to fillow the c if'linder lo receive lhe air lo its :fullest capacity.

Under ordinaryl elle eline-engine slows denon i in ohvioiie that', the resultant deel-eene in suction will el low the grrlvitziiing' nir-relie to more down. lhiel movement ol llie vulve wil lie rrzidnal o wing to tlr elow escape or :1i r

from lhe rr-.huinlier -i'i"-.l-- oln the dash-imi. or l:uehioninggy device hereinlleliore ileerriliedf, however il: will he eril'lenl. lluilx lire will noi'. eoinnlelzely' oloffe until he oi Comes to reel. lllliile the vehirle is; l, lrfivelingggtlie operator can Control ihr olf liquid il will luy ne meting" the lever ll/ lo ellerl :i liev n continued. eineioeions :is desired. lt is understood limi'. this more nien? oi ille lever illiili ille aforesaid linke :away .from ille shall; W25@- eo :le lo li 'lier the :liilurinn ol lhe plates from eziill e. hack lo the pivolie -(lof lie linln: n llie en n sen'ienl oil" lhe liolis willi the dolo llie pluies rennes lhe levller to lilly 'vulve lll lhe :1

ll' i5 evident mail' linke rain lie set ir., lhe sinne posillione l-liegr oeciiliied lw'forr: 'vulling ell the liquid no lizilY lhe relativo proportions of lho :iir und liquid will reinu'in inuthzinged, thi@v posilion run he readily lolerlninefl hy the nee of l'he dial or indiruli'rn, llor-izded with the lminl-levor or ollier oneriiling devire ne nerrinl';el"orl s el* led.

'lllhul' l elziini lez-- l. ln :i miiflmreter of an exiplosivernjgine, ihr oonihinailion ol :l irrlicfilly niovulilo nir ioley vulve opened h v ein-tion :md fillziiilrl'l izo clone by grm'ilzilion, n liqnidiniet vulve, n'uwl unioni connor-ling mid valves eo :ne ro ruim; luf ilrco valvise lo open :ind Plone si nuillinneousl :ino niiinllullyY operuied iidjnrsliniij niisinii ronneirl'ed lo line smid nier-llo,- nieni wlierrlij/ the lel'tli reunen the liquid-y inlel vulve lo lorie und ullows lli(A nir inici vulve lo operare iiu'lepmulrntly ol lhal liquid! inlel, vzilv i :is ret lorth.

ln :L rnrlimroter, rho oi1il inul1ion il :in upright onsinfz; hering' u direol, fiir-nnefdigge provided willi un inlet-poil n. inlllllur-rnlvn nmvulile lonQil'iidiinilly in lhi` pz'ifrsirg'e :ind opened hy :wuflion and :lllnjuril lo l. .o

i-onnerlril lio ille weinig n valve mul rollingl the leed of liquid, inochiinifein ronnorling lho luller vulve willi Ilu i'iulnilur valve ivlnrolrv lhe lwo viilV uro udopled lo open :1nd vloer siniullune ouelv, :ind munuullj.' olivi-:lied adjusting; nieuwe :iii`n=f'l,ed lo Suid mw'lmniein \\'lie.re liv seid uierlninimn allows ilu.: uir-inlet vulve lo oiilrulrinllriiriulonlli' oli llir: ollier faire ne .si-; loil'ii.

3. lo u i'firlun'-irr, ille ronihinzilion ol :in opi-iight, fusing' having;l :l dii-rol' nir-paesello provided .vilh :in inlel-|orl an ziolzoniuti rulli' viewing lulinleir vulve 1noviilile longi ludiniilly `n lhe i'izi'weiige :ind (zonlrollell hy :uwlion for opening; :ind rloeini -will poil :i lifiiiid-iiilel nozzle ex'endingr inlo the mw above. he hir-inlel pori7 :fi volvo rontrolling the feed of liquid through the nozzle, mechanism connecting the liquid-inlet feed of liquid through said opening., mechanism connecting the liquid-feed valve to the air-valve, and manually operated adjusting means connected to said mechanism for causing said mechanism to allow the liquidfeed valve to close independently of the airvalve.

5. In a carbureter, the combination of an upright casing having main and auxiliary air-passages and provided with one inletport for both passages, and provided with a liquid-inlet opening, a. vertically movable valve lifted by suction to open the air-inlet port and adapted, to drop automatically for closing the port; liquid-supply means communicating with said inlet-opening, a valve for controlling the feed of liquid, mechanism connecting the liquid-feed valve to the air-valve, and manuallyoperated means connected to said mechanism whereby the latter allows the liquid-feed valve to close independently of the air-valve as set forth.

6. In a carbureter, the combination of a casin having a central main air assaofe,

and an auxiliary air-passage surrounding the main air-passage and provided with an inlet-port therefor, valve operated by suction for opening the port, and adapted to close by gravity, said passages and valve being arranged so as to cause the air to bel drawn entirely through the main passage when the valve opens the port to a small degree and to cause air to be drawn through both passages as the valve continues to openv the port, a liquid feed-nozzle having lts disycharge end arranged directly over the ina-in air-passage,' a self-closing valve controlling the feed of liquid, and means actuated by the opening movement of theair-valve for opening said liquid-valve as set forth.

7. ln a carbureter, the combination of a casing having an air-passage provided with an inlet-port, means controlled by suction for opening and closing said port, a liquid chamber having a suitable source of supply and communicating with thev air-passage, a valve in said chamber forv controlling the feed of liquid to the passage, mechanism actuated by the suction-controlled means for invasie opening and closing the liquid-valve, and manually operated adjusting means connected to said mechanism' and adapting the latter to cause the said liquid-valve to close independently of the suction-controlled means as set forth.

8. ln a carbureter, the combination of a casing having an air-passage-provided with an inlet-port, an automatically closin valve disposed in the passage and adapte to be opened by suction, a liquid-receiving chamber having a suitable source of supply and communicating with the air-passage above the inlet-port, a vertically movable valve controlling the communication between the chamber and passage, mechanism connecting said valves, whereby the quantities of air and liquid drawn into the passage are correspondingly increased and decreased as the suction strengthens and weakens so as to maintain the sa'me relative proportions in the mixture, and manually operated adjusting means connected to said mechanism whereby said mechanism will cause the liquid-valve to close and the air-inlet valve to operate independently of the liquid-inlet valve.

9. In a carbureter of an explosive-engine, the combination of a casing having a vertical air-passage provided with an inlet-port, a valve movable longitudinally in said passage for opening and closing the port, saidv valve being lifted by suction and adapted to drop by gravitation, a chamberat the exterior of the casing having liquid-supply means and communicating with the airpassage above'the port, a vertically movable valve in said chamber for controlling the feed of liquid to the passage, mechanism actuated by 'the air-valve for opening and closingl the liquid-valve, and manually operated adjusting'means connected to said i mechanism whereby the latter will allow the liquid-valve to close independently' o the air-valve.

l0. In a carbureter of an explosive-engine, the combination of a casing having a vertical cylindrical air-passage provided ,with an inlet-port 1n its side, a tubular' avalve in said passage raised by suction to open the port and adapted to be lowered by gravity for closing said port, a liquidreceiving chamberlcommunicating With the air-passage above the air-inlet port, a valver movable vertically in the chamber for controlling the feed of liquid to said passage, mechanism actuated by the air-valve for operating the liquid-valve andincluding a pivotally mounted member, the pivot of said member being shiftable to 'permit greater or less movement to the said liquidvalve, and manually-operated means for shifting the said pivot to cause an increased or decreased quantity of. liquid to be drawn into the air passage and adapting said valve, .mechanism actuating the nove/aie liquid yvalve to close independently of the air-valve as set forth.

l1. In a cer'bureter of an explosive-engine, the combination of Ia casi-ng having main and auxiliary vided With an inlet-port for the passages, a valve operated by suction'for openingl the port whereby air is first drawn through the main passage and then through both passages, said valve being adapted to automatically close the port incidentI to the decrease in suction, a liquid-receiving cham'- ber having a suitable source of supply'and provided with an exit-opening, 'a feednozzle extending longitudinally slotted plates rigidly'nnitc means connecting the plates, normally stationaiy rods adapted to be shifted along the sides of the plates, `linlrs pivotally connected to the rods and engaging the slots of the plates toV permit greater or less distance from the val-veconnection to increase or decrease the movements of the plate to regulate the acting" of said liquid-valve, and means for shifting Seid rods asset forth.

13." In a carburetor' of an explosive engine, the combination of an air-inlet valve and a liquid-inlet-valve controlled by suction, a stem attached to the liquid-inlet latter valve comprising a horizontal shaft connected inaixf-passagcs and profrom the opening into the- `caslng and terrnl-natlng over the main a1r v ves controlling the intake.

said links to be set a termediate of itsends to the valvesteni, a

pair of rigidly united parallel longitudinally/slotted piates connected to the shaft and having fulcrums sliiftable in the siots thereof, means raising and lowering said plates, and manuallyopei-ated adjusting means comprising a pair oi" parallel longitudinally movable rods connected one end to the fulcrulns oli the plates for shifting the iiuicrunis toward and from. the etere# Said shaft to increase or decrease the niovement of the plates, the rods as and for the purpose set forth.

14:. .in a carburetor oiE an explosiveengine, the combination of an upright cylindrical casing forming an air-passage and provided with a small central'longitudinal tube also constitilting an aiipassage, the lower end of said tube provided with a dan ing inout-h, saidcasing being,I provided 'with an air-inlet port disposed at said mouth, a tubular .valve sliding telescopicaiiy within the casing; and lifted by suction for opening the port A to allow the air to be drawn through both passages and adapted to be lowered by gravity for closing the port, a liquiil-receivingV chamber having a suitable source oi supply, a eedmozzle leading from the chamber and terminating' in the casing directly"`above `the central airepassage, a vertically movable valve in the liquidchamber for controllingr the ieed throughtlie nozzle, mechanism actuated by 'the air valve oroperating Vthe liquidvalve, and means by which said mechanism can be adjusted to regulate the action of the liquidvalve and whereby the latter may be thrown out of operative connection 'with the airvalve While the air-valve is in open peer 'tion iler the purpose described? and ineens i'or closing, said liquid-valve as set forth. WllJlillli/i A. Ciiiili'ilr "illitnessos t d. J., Limes,

Rennen Gais,

and a lever for moving 

